Motor governor



July 28, 1942. LYQNS 2,291,165

MOTOR GOVERNOR Filed April 10, 1941 lNi/ENTOR ATTORNEYS Patented July 28, 1942 UNITED sTATEs PATENT orrics MOTOR GQVERNUR Harry "Lyons, Fayetteville,

Application April lit, 119411., Serial No. tt'hlitt (ill. 2ll=-8lii 2 Claims.

This invention relates to a motor governor and has for an object to provide an automatic controlling device which will not in any way interfere with the full supply of fuel to the motor of the motor vehicle except when the vehicle is about to exceed a pre-determined speed limit at which time the supply of fuel will be temporarily out on".

A further object is to provide a device or this character which will be formed of a few strong, simple and durable parts, which will be increpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood. that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawing forming a part of this specification:

Figure 1 is a side elevation of an internal com bustion motor equipped with speed control apparatus constructed in accordance with the in vention.

Figure 2 is an enlarged plan view showing the governor weights and the fixed and movable contacts for energizing the electro-"nagnets to control the throttle valve of the carburetor.

Figure 3 is a longitudinal sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a longitudinal sectional view with parts in elevation showing the electro-magnet throttle valve operating lever controlled. by the magnet and dash pot for retarding movement of the throttle valve.

Figure 5 is a detail perspective view of the governor weight carrying the adjustable contact.

Figure 6 is a detail cross sectional view taken on the line 6-6 of Figure 2.

Figure 7 is a detail cross sectional view taken on the line 'l'! of Figure 2 with the governor weight removed.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, l0 designates a circular housing which is closed by a cover ll. Mounted within the housing is a circular disk B2 of insulating material which is fixed to a shaft lit by a nut I4 threaded onto the end of the shaft. The shaft extends through a tubular housing it formed integral with the housing in and is connected by meshing gears I6 and H with a shaft which is mounted in a housing I19 connected to a gear case 2t by a threaded coupling iii. A shaft 22 in the gear case is connected to the propeller shaft 223 of the motor vehicle by meshing gears 25 and Thus the insulating dislr. i2? is rotated at the same speed as the propeller shaft. The shaft 116 is connected to the flexible shaft 26 of the speedometer 2T1.

Mounted on the insulating disk are a pair of governor weights and it each pivoted at one end on the dislr by respective pivot pins 29 and 2. 5 and each being spring retracted at the free end by a helical spring 3i].

Mounted on the underneath face of the dislr are a pair of concentric spaced commutator rings 3i and The larger or outermost ring it is supplied with current from the source of elec= tricity through the medium of a conductor wire 3 3 which is connected to the casing 35 of a spring-pressed carbon brush which has wiping contact with the ring. The ring itself is electrically connected to the governor weight through the medium of the pivot pin 29] of the weight being screwthreadedly engaged with the ring as shown at 37! in Figure '6. The smaller or innermost 1mg 32 is electrically connected to an electi e-magnet by a wire 39 which is connected to the housing it of a spring-pressed carbon brush it which has wiping contact with the ring.

The housings 35 and till or the brushes are removably secured in the housing lid through the medium of screws, or other connectors, t2 passed through the base of the housing into an in sulating annulus 33 which is secured to the bottom 01 the housing by screws M.

A stationary switch contact 35, best shown in Figures 2 and '7, is screw-threadedly engaged as shown at it with the innermost ring 32. The stationary contact projects through a slot ll formed in the governor weight which is electrically connected to the outermost ring, this slot being concentric with the pivot pin 29 of the weight. An adjustable contact 48 is threadedly engaged in a projection on the governor weight and confronts the fixed contact id. The adjustable contact may be advanced or retracted relatively to the fixed contact to vary the gap between the contacts. A nut Mi is threaded onto the adjustable contact to hold the contact in adjusted position.

When the vehicle speed has reached a predetermined limit the governor weights 28 will have swung outwardly on their pivots sufficiently to carry the adjustable switch contact 48 into circuit closing position with the fixed switch contact I, to close a circuit to the electro-magnet, which circuit may be traced from the source of electricity 33. wire 34, brush I6, outer ring ll, pivot pin 29, governor weight 28, adjustable contact ll, stationary contact ll, inner ring 8!, brush II, and wire 80.

The electro-magnet II is housed in a casing II which is supported upon a bracket ll secured to the carburetor 52. The eiectro-magnet has associated therewith a pivoted armature a which projects through an opening in the casing and is connected by a link II to one end of a lever II which is pivoted on a post I! secured to the bracket arm II. The lever is connected intermediate its ends to a crank II which extends from the throttle valve ll through the medium oi a link I. When the electro-magnet is energized, as above described, the throttle will be closed to shut on the fuel 811991!- For retarding too quick action of closing movement of the throttle a dash pot I is secured to the side of the carburetor in any preferred manner. The piston II or the dash pot is connected to the free end of the lever 50. The dash pot is provided with a bleed opening 83. When the lever It is actuated, the piston is moved to extrude air from above it through the bleed opening 03 to retard closing movement of the throttle. When the electromagnet is de-energized, the throttle may be again controlled by the usual hand or foot controls and upon the de-energizing of the electro-magnet and the resumption oi manual control, the piston 62 oi the dash pot will be moved to suck air into the dash pot through the bleed opening Cl to retard too quick opening of the throttle and thus promote smoothness of operation of the internal combustion motor.

Since the operation of the parts has been described as a description of the parts progressed.

it is thought that the invention will be fully understood without further explanation.

What is claimed is:

l. A governor switch comprising, a speed responsive shaft. an insulating disk fixed on the shaft, a pair of spring retracted governor weights on the disk, outer and inner concentric commutator rings on the disk, respective stationary brushes linging the rings, means for supplying the brush of the outer ring with electric current. a pivot for one of the governor weights engaged through the disk and fixed tcthe outer commutator ring, the last-named' weight having an opening therein concentric with the pivot, an i iustable switch contact carried by the lastnamed weight overlapping said opening, and a fixed switch contact fixed to the inner ring and projecting through said opening into the path of the adjustable contact adapted to be engaged by the adjustable contact when the governor weights swing outwardly.

2. A governor switch comprising, a housing, a circular disk 01' insulating material mounted in the housing. a shaft responsive to motor speed fixedtothediskforrotatingthe disk,apairoi' pivoted spring retracted governor weights on the disk, a pair of concentric spaced rings of conducting material on the disk, a brush in the housing engaging the outermost ring and adapted to be supplied with electric current, a brush in the housing engaging the innermost ring. a fixed contact on the inner ring, there being a slot in one of the governor weights through which said fixed contact projects, a pivot for the last-named governor weight electrically connected to the outer ring, and a movable and adjustable switch contact carried by the last-named governor weight adapted to engage the fixed contact.

HARRY LYONS. 

